[Mesa-dev] [PATCH] radv/ac: Fix shared memory offset calculation

[Alex Smith]

The index passed to get_shared_memory_ptr is an attribute slot index,
i.e. the index of a vec4 within LDS. Therefore this must be scaled by
sizeof(vec4) to give the LDS byte offset.

Signed-off-by: Alex Smith <asmith at feralinteractive.com>
---
 src/amd/common/ac_nir_to_llvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 01346c3..6e36c19 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -297,7 +297,7 @@ static LLVMValueRef get_shared_memory_ptr(struct nir_to_llvm_context *ctx,
 	LLVMValueRef ptr;
 	int addr_space;
 
-	offset = LLVMConstInt(ctx->i32, idx, false);
+	offset = LLVMConstInt(ctx->i32, idx * 16, false);
 
 	ptr = ctx->shared_memory;
 	ptr = LLVMBuildGEP(ctx->builder, ptr, &offset, 1, "");
-- 
2.9.3